2004 DACIA SUPERNOVA Repair Manual

ENGINE E7J-A-2/6011
UPPER AND FRONT ENGINE UNITS
The engine is set at the tuning point (see Chapter 10, pages 10-19);
The screw-nut of t he stretching runner i s loosened;
The distri bution belt is taken off.
R
E-MOUNT ING
A new distribution belt is mounted ( see Chapter 10, pages 10-33);
The tension in t he di stribution belt is checked and a djusted, by m eans of MOT.1505
device, at the value of 145-185 Hz.
The opera tions are done in the reverse order of those in the dismantling process;
The screws are tightened at the couple;
It is c ompulsory t o tighten the crankshaft pulley a t a 2 daNm couple plus a n angle of
68
o+/-6o;
The compressor pulley ( AC) is re-mounted;
The be lt of the alterna tor a nd that of the compre ssor are stretched, oberving the
values of the mounting tension:
Alternator: 263 Hz+/- 10%
Co mpressor: 222 Hz+/- 10%.
11 - 2
DISTRIBUTION BELT
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ENGINE E7J-A-2/6011
UPPER AND FRONT ENGINE UNITS
SPECIAL TOOL- AND-CHECK SETS
MOT.1202-01 -”CLIC” collar-pincers
MOT.1505 -Device for measuring belt tension
MOT.484 -Device for jacket maintaining -Wrench for angular tightening
-Pincers for elastic collar
TIG H TENING CO UPL E S (daNm )
S crew-nut of stretching runner/pulley 5
Screw of crankshaft pulley 2+68
o+/-6o
Screws of pendular suspension stand 6.2
Screw-nut of hydro-elastic buffer 3.7
Wheel Screws 7.5
Co mbustion-head Screws 2+97
o+/-2o
To take apart :
-the connector of the induction coil;
-the fue l hoses (t he going- and re -
turn circ uit); -the connectors of the injectors;
-the plugs of the sparks;
-the induction coil.
11 - 3
CYLINDER HEA D FITTING
D
IS M O UNT ING
The car is placed on a two-column lift -
ing stand; The battery i s disconnected;
The cooling circuit is emptied at the
jack situated at the lower pa rt of the radia-
tor; The distribution belt is taken apart (see
Chapter Distri bution Belt);
The following are taken apart: -air-filter;
-the c onnector of the c lapper-posi-
tion potentiometer (1); -the acceleration cable;
-the connector of the atmosphe ric
pressure sensor (2);
-the co nnector of the step-by-step
engine (3); -the connector of t he air temperature
sensor (4) on the intake collector;
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ENGINE E7J-A-2/6011
UPPER AND FRONT ENGINE UNITS
The hoses of the thermostat stand are
disconnected;
To take apart :
-the thermic screen;
-the exhaust collector;
-the alterna tor;
-the guide of the oil-l evel gauge;
To take apart :
-the combustion-head screws, ex-
cept the scre w corresponding to A po-
sition, which i s only loosened, then the
combustion-head is turned round the re-
maining screw; -the cylinder-head;
The ja cket -mainta ining MOT.484
device is mounted.
Check the plane of the c ylinder-head.
11 - 4
CYLINDER HEA D FITTING
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ENGINE E7J-A-2/6011
UPPER AND FRONT ENGINE UNITS
RE-MOUNT ING
The plane of the fitting is cleaned and checked.
Mount the cylinder he ad with a new gasket.
The taking-apart opera tions are done in the reverse order.
The combustion-head is tightened ( see Chapter 10, pages 10-31).
The distri bution belt is mounted ( see Chapter 10, pages 10-33);
It is mounted in the reverse order of the taking-apart process;
The filling-up and the airing of the cooling circuit is done ( see Chapter “Filling-up
and draining” );
The rocker-arms are adjusted.
NOTE
At each operation requiring battery disconnection, when reconnecting, introduce
the radio code, which is written on the vehicle-buying invoice.
11 - 5
CYLINDER HEA D FITTING
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ENGINE E7J-A-2/6012
FUEL MIXTURE
CH ARACTERISTICS
ENGINE
Car Gearbox Ty p e Index Cylinder Stroke Cylinder
bore length volume
(mm) (mm) (cm3)
SupeRNova JH3-050 E7J A-2/60 75,8 77 1390 9,5/1
Check-ups in idle mood*
Motor Emisii poluan
i
Fuel
Type Index Mode CO(%) CO2(%) HC Lambda (minimum
(rot/min) (1) ppm l octanic number)
E7 J A-2/60 750+/50 0,5 14,5 100 0,97.. .. Unleaded petrol
max min max ....1,03 (CO95)
(1) at 2500 rot /min the CO value must be max. 0.30%;
* For water t emperature over 80
oC and after stabilizing at 2500 rot/mi n for 30
seconds; then turn ba ck into idle mode and the level of fumes is measured. The water-tempera ture a nd air-t emperature sensors are type NTC (negative
temperature coefficient), and the vari ation of their re sistance as to temperature
has the following evolution:
T (0C ) 0 20 40 80 90
A ir-T sensor
11970 - 7470 4045 - 3060 1600 - 1315 - -
R (Ohm)
Engine T 8000 - 67 00 3000 - 2600 1300 - 1100 300 - 270 215 -200
sensor
R (Ohm)
12 - 1
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ENGINE E7J-A-2/6012
FUEL MIXTURE
DENOMINATION PARTICULARITIES
Computer 90-ways connector
Injection system Multi-point sequential
Ignition PINIS R
W
Static wi th a double coil
Computer controlled ignition R
A-B1W
R
A-C0,5 W
R
B-C0,5 W
R
1-47+/-1KW
R
2-37+/-1KW
Detonation se nsor Piezoelectric type SAGEM
Tightening moment = 2 daNm
RPM SENSOR ELECTRICFIL or SIEMENS R = 200......270 W
Spark plugs EYQUEM - type RFN 58 LZ
CHAMPION - type RC 87 YCL
Fuel filter For EURO 96:
Attached under the vehicle in front of the fuel tank
Replacement on the occasion of the scheduled inspections
For EURO 00:
Into the fuel tank, attached on the fuel pump assembly.
It is no t replaced separate.
Fuel pump Immersed in the fuel tank
For EURO 96: - Flow: 1,3 l/min - Pressure: 3 bars at 12V tension
For EURO 00: - Pressure: 3,5 bars at 12V tension
Pr essure controller For EURO 96:
Pressure controller attached on the injection ramp
Controlled pressure: - 3 +/- 0,2 bars at zero depression- 2,5 +/- 0,2 bari at a depression of 500 mbars
For EURO 00:
Mounted into fuel tank on the fuel pump assembly
Controlled pressure: 3,5 bars
El ectric injectors SIEMENS
R = 14,5 +/- 1 W la 20
0C
+ 12 V supply
Step by s tep engine R
A-D = 52 +/- 5 W
R
B-C = 52 +/- 5 W
12 - 2
CH ARACTERISTICS
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ENGINE E7J-A-2/6012
FUEL MIXTURE
12 - 3
CHARACTERISTICS
DENOMINATION PARTICULARITIES
Valve potentiometer
Canister purging
valve
Oxygen sensor
At mospheric
pressure sensor
idle at maximum
acceleration
A - B 1300 W130 0 W
A - C 1500 W 2000 W
B - C 2000 W 1300 W
SAGEM
Supply tension= +12 V
R = 26 +/- 4W la 23
0 C
NGK
For EURO 96: an oxygen sensor attached on upstream of
catalyzer Generate d tension at 8500C:
- rich mi xture 750 +/- 50mV
- sa lt mixture 150 +/- 50 mV
He ating resistance R
A-B = 3 ..... .. 15 W
For EURO 00: two oxygen sensors attached one on
upstream and the othder one on downstream of catalyzer
DELCO ELECTRONICS
Stopped engine – shows an atmospheric pressure of
950...1050 mbar
Idle engine - 330 +/- 40 mbar
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ENGINE E7J-A-2/6012
FUEL MIXTURE
DIS M O UNT ING
The battery is disconnected.
The air tube is taken off the battery-prot ecting screen.
The four screws (1) for air-filter fixing are taken off.
The hose connecting the combustion-he ad cap and the air-filter i s disconnected.
The air-filter is taken apart
To disconnect:
-the accelera tion cable (the end of the cable is uncoupled from the command lever
of the clapper, and then it is taken off t he sleeve on the stand);
-the connectors:
I . of the step-by-step engine; II. of the clapper pot entiometer.
RE-MO UNT ING
The fitting of t he clapper body is replaced;
The same steps are taken as in the case of the dismantling, only in the reverse order.
12 - 4
1
I II
CLAPPER BODY
(no. 2 clamp is pulled upwards and the connector is taken off)
The command lever i s uncoupled off the body of t he clapper;
The clapper body is taken apart.
22
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